52811247078720 has 336 divisors, whose sum is σ = 195648175632000. Its totient is φ = 12997929627648.

The previous prime is 52811247078643. The next prime is 52811247078767. The reversal of 52811247078720 is 2787074211825.

52811247078720 is a `hidden beast` number, since 5 + 2 + 81 + 1 + 2 + 470 + 78 + 7 + 20 = 666.

It is a super-2 number, since 2×52811247078720² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 287709531 + ... + 287893029.

It is an arithmetic number, because the mean of its divisors is an integer number (582286237000).

Almost surely, 2^{52811247078720} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52811247078720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97824087816000).

52811247078720 is an abundant number, since it is smaller than the sum of its proper divisors (142836928553280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52811247078720 is a wasteful number, since it uses less digits than its factorization.

52811247078720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191222 (or 191209 counting only the distinct ones).

The product of its (nonzero) digits is 3512320, while the sum is 54.

The spelling of 52811247078720 in words is "fifty-two trillion, eight hundred eleven billion, two hundred forty-seven million, seventy-eight thousand, seven hundred twenty".